UPC: 733739001665
# N0166

The Many Benefits of L-Tryptophan

L-Tryptophan is an essential amino acid that the body cannot synthesize on its own. It must be obtained through diet or supplementation. L-Tryptophan is critical for the production of serotonin and melatonin. Serotonin helps to support a positive mood, while melatonin promotes healthy sleep patterns. L-Tryptophan also supports proper immune system function.*

How L-Tryptophan Supports a Positive Mood*

Serotonin is a neurotransmitter that plays a role in mood and other brain functions. A deficiency in serotonin has been linked to depression and anxiety.* Supplementing with L-Tryptophan can help to increase levels of serotonin, which can in turn encourage a positive mood.*

L-Tryptophan and Restful Sleep*

Melatonin is a hormone that helps to regulate sleep patterns. It is produced in response to darkness and inhibits feelings of wakefulness.* Supplementing with L-Tryptophan can help increase levels of melatonin, which may promote deep, restful sleep.*

In Summary:

L-Tryptophan is an essential amino acid with many potential benefits.* It is involved in the production of serotonin and melatonin, both of which play important roles in mood and sleep regulation.* L-Tryptophan supplementation may help to support a positive mood* and promote restful sleep*. NOW® L-Tryptophan is rigorously tested for peak E contamination and microbial safety.

Suggested Usage: Take 1-2 capsules 2 to 3 times daily on an empty stomach, with final dose at bedtime, or as directed by your physician.

Store in a cool, dry place after opening.

Supplement Facts

Serving Size: 2 Veg Capsules

Servings Per Container: 30

Description Amount per Serving % Daily Value

L-Tryptophan (Free-Form) 1 g (1,000 mg)

**Daily Value not established.

Other Ingredients: Hypromellose (cellulose capsule), Rice Flour, Ascorbyl Palmitate and Stearic Acid (vegetable source).

Not manufactured with wheat, gluten, soy, milk, egg, fish, shellfish, tree nut or sesame ingredients. Produced in a GMP facility that processes other ingredients containing these allergens.

Caution: For adults only. Consult physician if pregnant/nursing, taking medication (especially antidepressants such as SSRIs and MAOIs), or have in a medical condition. May cause drowsiness. Do not use with alcoholic beverages or while operating heavy machinery. Keep out of reach of children.

Natural color variation may occur in this product.

Made and quality tested in the USA with globally sourced ingredients.

Store in a cool, dry place after opening.


Family owned since 1968.

*These statements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure or prevent any disease.

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